A few facts about Alfonso Castañeda
- About 8,500 people live in Alfonso Castañeda.
- It's part of the Cagayan Valley.
- Quezon City, the largest city in the Philippines, is about 131 km away.
- For a bigger city, Bongabon is about 25 km away.
- Towns nearby: Cabanatuan City (50 km), Gapan (67 km) and Paniqui (79 km).